You just do an IC swap on the display for example to bypass that. There are tools to read original screen and camera data, store it, and reprogram the new part.
Most parts remain reusable.
Everyone is aware of cheap storage upgrades for iPhone and Mac via NAND upgrades. These snatches are a good source of NANDs.
Exactly, these parts end up in shops that can separate PCBs and swap and program BGA chips. They just remove and replace the security ICs.
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